Chapter 3 lays the groundwork for the comparative analysis by describing the specific contexts of exit and reception for migrants from Turkey, the Dominican Republic, Mexico, and the Philippines. For contexts of exit, it pays particular attention to how political regimes and economic development policies have contributed to migration since each country’s first migratory wave. For contexts of reception, it identifies the relevant host countries for each case and then shows how their immigration laws, labor markets, and public opinion have affected the composition and experiences of migrants living within their borders. The chapter concludes with a picture of the legal, socioeconomic, and geographical profiles of migrants from each of the four countries.